“333 Day” is written in pencil on the back of today’s panel, presumably by Mr. Yost. Threethreethree Day is a minor holiday for jackalopes in which they anticipate the extinction of the human species. It is a brief holiday (and merrier than Christmas because of that) with one song, “She’s Comin’ ‘Round the Mountain”, that has extra verses about the grim death of civilization as we know it. The last two verses are happy ones for jackalopes, contemplating the jollity that ensues when their god Ekchuajumudabrutu makes his triumphal (and extremely violent) return to supreme power.
Threethreethree Day is not celebrated in leap years.